CN105605953A - Ultra-low temperature tubular heat exchanger - Google Patents
Ultra-low temperature tubular heat exchanger Download PDFInfo
- Publication number
- CN105605953A CN105605953A CN201610020927.0A CN201610020927A CN105605953A CN 105605953 A CN105605953 A CN 105605953A CN 201610020927 A CN201610020927 A CN 201610020927A CN 105605953 A CN105605953 A CN 105605953A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- heat exchange
- outer barrel
- urceolus
- partition plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1607—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
- F28F2009/226—Transversal partitions
Abstract
The invention discloses an ultra-low temperature tubular heat exchanger which comprises a heat exchange outer barrel and a heat exchange pipe arranged in the heat exchange outer barrel. The heat exchange outer barrel is provided with a shell side fluid inlet and a shell side fluid outlet. A flow guide partition plate is arranged in the heat exchange outer barrel. The ultra-low temperature tubular heat exchanger is characterized in that a main fluid area and an auxiliary fluid area are formed between the two sides of the flow guide partition plate and the heat exchange outer barrel and located on the opposite sides of the heat exchange outer barrel, and the auxiliary fluid area is lower than the lower edge of the heat exchange pipe. Compared with the prior art, the auxiliary fluid area for heat convection is additionally arranged at the crossed position of the flow guide partition plate and the heat exchanger outer barrel of the heat exchanger, and a low-temperature liquid pool in the heat exchanger is omitted to lower the temperature gradient of the two sides of the partition plate and the crossed position of the outer barrel and the partition plate, so that heat stress of the position of the partition plate and the heat exchanger outer barrel is effectively lowered, safety of the heat exchanger is improved, and the service life of the heat exchanger is prolonged.
Description
Technical field
The present invention relates to field of heat exchangers, relate in particular to for ultralow temperature pipe heat exchanger.
Background technology
Pipe heat exchanger is widely used heat exchanger in industry, is mainly used in carrying out between two or more liquid heat exchange. But, in the super low temperature refrigeration systems such as liquefied natural gas, low temp fuel, superconduction, along with the reduction of fluid media (medium) temperature, more than the temperature difference in heat exchanger can reach 200K, cause the thermal stress of heat exchanger internal structure sharply to rise, security and the life-span of heat exchanger operation bring negative effect. Therefore how to reduce the structure thermal stress of ultralow temperature pipe heat exchanger, improve equipment operating safety factor and service life, become the important topic in pipe heat exchanger research field.
In the time that pipe heat exchanger operates in ultralow-temperature operation conditions, the general flow velocity of shell side liquid is lower, and viscosity can increase along with the reduction of temperature, cause forming the low-down liquid pool of flow velocity in the location of the dividing plate back side or other relative closures, by with the abundant heat exchange of heat exchanger tube, the low temperature liquid pool that formation temperature gradient is huge, causes the thermal stress of partial structurtes to increase, the security of heat exchanger is reduced, and shorten service life.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, and a kind of security of heat exchanger and ultralow temperature pipe heat exchanger in service life of improving is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of ultralow temperature pipe heat exchanger, comprise heat exchange urceolus and be arranged on the heat exchanger tube in heat exchange urceolus, on described heat exchange urceolus, be provided with shell-side fluid entrance and shell-side fluid outlet, in described heat exchange urceolus, be provided with diaphragm, it is characterized in that, between the both sides of described diaphragm and described heat exchange urceolus, be formed with main flow tagma and secondary flow tagma, described main flow tagma and secondary flow tagma are at the opposite side of described heat exchange urceolus, and described secondary flow tagma is lower than the lower limb of heat exchanger tube.
Be provided with in described secondary flow tagma the supporting construction that an one end is connected with described diaphragm, the other end of this supporting construction is connected on described heat exchange urceolus, and described secondary fluid region is divided into two sub-flow regions by described supporting construction.
Described two sub-flow regions are symmetrically distributed in described supporting construction both sides.
The angle that described supporting construction and diaphragm form is right angle.
Ultralow temperature pipe heat exchanger of the present invention, in the secondary flow tagma of diaphragm and heat exchanger urceolus intersection increase heat convection, shell-side fluid is flow through from the secondary flow tagma of original main flow tagma and increase respectively in heat exchange urceolus simultaneously, the existence in secondary flow tagma, make dividing plate both sides exist the fluid of larger temperature difference to form direct heat convection, substitute originally by the heat transfer of dividing plate, greatly increase the heat exchange efficiency of this position, thereby effectively eliminate the low temperature liquid pool of heat exchanger inside, reduce the thermograde of dividing plate both sides and urceolus and dividing plate intersection location, effectively reduce dividing plate and the heat exchanger urceolus thermal stress in this position, security and the service life of heat exchanger are improved, simultaneously, secondary flow tagma is lower than the lower limb of heat exchanger tube, now just in time exchanging heat pipe by dividing plate supports and locates, simplify the structure of heat exchanger, improve the stability of heat exchanger.
Brief description of the drawings:
Fig. 1 is the sectional schematic diagram of ultralow temperature pipe heat exchanger of the present invention;
Fig. 2 is the structural scheme of mechanism of ultralow temperature pipe heat exchanger of the present invention;
Fig. 3 is the contrast of ultralow temperature pipe heat exchanger inner fluid of the present invention temperature field.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1 and Figure 2, ultralow temperature pipe heat exchanger of the present invention, comprise: comprise heat exchange urceolus 4 and be arranged on the heat exchanger tube 6 in heat exchange urceolus, on heat exchange urceolus 4, be provided with shell-side fluid entrance 7 and shell-side fluid outlet 8, in heat exchange urceolus 4, be provided with diaphragm 5, diaphragm 5 is arranged alternately the relative both sides in heat exchange urceolus 4 inside. The reserved some heat exchanger tube installing holes 6 of diaphragm 5 are formed with main flow tagma and secondary flow tagma between the both sides of diaphragm 5 and heat exchange urceolus 4, and main flow tagma is with secondary flow tagma also in the relative both sides of heat exchange urceolus 4, and secondary flow tagma is lower than the lower limb of heat exchanger tube 6.
Be provided with in secondary flow tagma that an one end is connected with diaphragm 5 for the supporting construction 3 of fixed bar is installed, the other end of this supporting construction is connected on heat exchange urceolus 4, and the supported structure 3 in secondary fluid region is divided into two sub-flow regions (1 and 2) that are symmetrically distributed in supporting construction both sides. In sub-flow region, supporting construction 3 is right angle with the angle that diaphragm 5 forms.
The improvement of heat exchanger of the present invention is diaphragm 5, adds only need carry out cutting processing to former diaphragm man-hour and go out two sub-flow regions, to reduce the change to processing technology, reduces Cost optimization.
Diaphragm install with A B C place, shell-side fluid enters from entrance 7, outlet 8 outflows. Installation method and process and former diaphragm are consistent, and to reduce the change to total coating process, reduce Cost optimization.
Utilize fluid simulation software to contrast the shell side temperature field before and after optimizing, as shown in Figure 3, in former flow field, low temperature liquid pool in the lower right corner disappears, the temperature drop at dividing plate back be improved significantly, thereby explanation the present invention has very significantly effect to the optimization of pipe heat exchanger internal temperature field.
It is worthy of note; protection scope of the present invention is not limited to above-mentioned concrete example mode; according to basic fundamental design of the present invention; volume can be realized object of the present invention by essentially identical structure; as long as those of ordinary skill in the art are without process creative work; the embodiment that can associate, all belongs to protection scope of the present invention.
Claims (4)
1. a ultralow temperature pipe heat exchanger, comprise heat exchange urceolus and be arranged on the heat exchanger tube in heat exchange urceolus, on described heat exchange urceolus, be provided with shell-side fluid entrance and shell-side fluid outlet, in described heat exchange urceolus, be provided with diaphragm, it is characterized in that, between the both sides of described diaphragm and described heat exchange urceolus, be formed with main flow tagma and secondary flow tagma, described main flow tagma and secondary flow tagma are at the opposite side of described heat exchange urceolus, and described secondary flow tagma is lower than the lower limb of heat exchanger tube.
2. ultralow temperature pipe heat exchanger according to claim 1, it is characterized in that: be provided with in described secondary flow tagma the supporting construction that an one end is connected with described diaphragm, the other end of this supporting construction is connected on described heat exchange urceolus, and described secondary fluid region is divided into two sub-flow regions by described supporting construction.
3. ultralow temperature pipe heat exchanger according to claim 2, is characterized in that: described two sub-flow regions are symmetrically distributed in described supporting construction both sides.
4. ultralow temperature pipe heat exchanger according to claim 3, is characterized in that: the angle that described supporting construction and diaphragm form is right angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020927.0A CN105605953A (en) | 2016-01-13 | 2016-01-13 | Ultra-low temperature tubular heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020927.0A CN105605953A (en) | 2016-01-13 | 2016-01-13 | Ultra-low temperature tubular heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105605953A true CN105605953A (en) | 2016-05-25 |
Family
ID=55986091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610020927.0A Pending CN105605953A (en) | 2016-01-13 | 2016-01-13 | Ultra-low temperature tubular heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105605953A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3417812A (en) * | 1966-11-30 | 1968-12-24 | Du Pont | Heat exchanger apparatus with a novel by-passing arrangement for shellside flow |
| WO2011130234A1 (en) * | 2010-04-14 | 2011-10-20 | Saudi Arabian Oil Company | Auxiliary supports for heat exchanger tubes sets |
| CN204495155U (en) * | 2014-12-01 | 2015-07-22 | 中石化洛阳工程有限公司 | A kind of horizontal pipe case condenser |
-
2016
- 2016-01-13 CN CN201610020927.0A patent/CN105605953A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3417812A (en) * | 1966-11-30 | 1968-12-24 | Du Pont | Heat exchanger apparatus with a novel by-passing arrangement for shellside flow |
| WO2011130234A1 (en) * | 2010-04-14 | 2011-10-20 | Saudi Arabian Oil Company | Auxiliary supports for heat exchanger tubes sets |
| CN204495155U (en) * | 2014-12-01 | 2015-07-22 | 中石化洛阳工程有限公司 | A kind of horizontal pipe case condenser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160525 |
|
| WD01 | Invention patent application deemed withdrawn after publication |